The Enigma Files Episode Rating Graph

Nick Lewis's forced transfer to the Prisoners' Property Office promises nothing but boredom and the antagonism of Kate Burton—but it also nearly costs him his life.

Nick Lewis vanishes while investigating the disappearance of heiress Caroline Bates.

Lewis becomes emotionally involved with a suspect when the file on Arnold Humble's accidental death is re-opened.

Forger William Swain has died in prison so DCI Adams is ordered to track down the engraving plates and any counterfeit money left in circulation.

Nick Lewis and fellow officer Joe Mackie find themselves under investigation from Criminal Investigations when a convicted prisoner gives their names to DCI Lowson

Phil Strong is given discarded fake charity boxes left on a rubbish tip to find their origin. DCI Nick Lewis, however, considers it evidence and needs to be investigated despite the low amount of money stolen.

Divorcee Penny Birch was conned out of a large amount of money by a plausible suitor, who even had his own butler. The police investigation drew a blank but DCI Lewis believes a new lead may catch this duo.

A gang plot to enter the police's vaults containing files and evidence from previous investigations.

Phil Strong visits Stanton, looking into a pair of forged paintings owned by Harry Brookeway. When Brookeway is found dead and Phil standing over him, he is arrested for murder which is convenient for everyone.

Two hit men have Peter Wolfe in the sights when he sees DCI Lewis and takes off running. A hour later his body is pulled out of the canal except when Lewis attempts to view the body he is thwarted.

High flying company secretary Pam Knowland asks Nick Lewis to help her get a blackmailer who is threatening to give information to their clients. Knowland is terrified that her ex-husband crimes would destroy her current business.

Phil Strong recovers fingerprints from a batch of stolen watches which belong to Phil Singer, who died twelve years previous. DCI Lewis discovers Singer has a daughter and decides to use her to root him out.

Nick Lewis ex-wife Pauline is arrested at the airport when a .22 pistol is found in her bag. The gun is later linked to the Wesminster Bank job where someone was killed. Lewis is convinced she has been fit up.

The brother of Sheik Ibn Essif, Hussein has made plans to kidnap him to stop attending a conference in London. The Sheik has escaped one attack but is in hospital. Returning valuable possessions, Nick is kidnapped by mistake.

When Nick Lewis returns from holiday he discovers his replacement D.S Dennis Kates has died in a car accident. According his wife, Kates was going solve a case that D.C.I Lewis had made a mistake on.